Boiler.



Patented May I3, I902.

E. L. ,MUORE.

8 0 I L E R.

(Application filed Aug. 16, 1900. Renewed Feb. 5, 1902.)

2 Sheets-Sheet 2.

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I UNITED STATES;

@ PAT NT OFFICE.

' ENOS L. MooRE, oF-o IoAeo, ILLINOIS.

' BOILER.

SPECIFICATION forming part of was Patent no. 699,888, dated May 13, 1902. T I

Application filed August 16,1900. -Renewed;I'ehruary 5,1902. Saria1No. 92,728- (No mtdem- To all whom it may concern: v

Be it known that I, Enos LJMOORE, a citi zen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented or discovered certain newand useful Improvements in Boilers, of which improvements the following is a specification.-

The invention described herein relates to certain improvements in vertical water-tube boilers, and has for its object a construction and arrangement of boiler and fire-box whereby the gases and products of combustion are caused to pass through a combustion-chamber within the boiler proper, so that the gases may be thoroughly ignited before they are: brought into contact with the heating-surfaces of the boiler.

It is also an object of the invention to pro- .vide for an equal distribution and initial 'application of the products of combustion to the boiler at a plane near the top of the boiler, Where the highest heat prevails, and then causing the products-of combustion to fio\ down along the tubes.

It is a further object of the invention to so tional elevation of my improved boiler; and,

Figs. 2 and 3 are sectional plan views on planes indicated by the lines II II and III III, respectively, Fig. 1.

In the practice of my invention the lower portion or member of theboiler is formedby. an annular drum 1, which is supported upon,

a frame 2 atasuitable height from the ground. From'the top wall of this drum extends a series of tubes 3, which at their upper ends are:

connected to an annular drum; It is preferred that the central opening through this upper drum 4 should be contracted, asshown,

thereby increasing and strengthening theinternal heating-surface of the drum. This centralopening isclosed-by a plate 4, formed of any suitable refractory material. The drums 1 and 4, with their connecting-tubes 3,

are inclosed in 'a casing consisting-of fanex ternalmetal shell 5 and an internal lining of brick and extending'from a point near the upper endof the upper drum down to or approxiimatelyfto the top of the lower drum, as shown i'n'Fig. I." Said casing is made sufiiciently largeto afiord a passage around the tubes.

The lowerdruml ispreferably inclosed by a metal shell6, which extends from the lower end of the casing-shell 5 down to the platform 2, although the casing-wall itself may,

if desired, extend down to the platform. The

stack 7 is connected, as'shownin Figs. 1 and 3,

'to this lower shell 6.

The fire-chambers is constructed and arranged immediately below the lower annular drum, and from this fire-chamber extends a tubularwall 9, which passes up through the lower drum to a point a little below the upper drum. The products of combustion and gases pass from the fire-chamber up into this tubular chamber, where the gases become thoroughly ignited, and thence pass outwardly from the end of the tubular passage between the tubes 3, connecting the upper and lower drums, and down along such tubes to the chamber surrounding the lower drum, whence they pass to the stack. In order to prevent the products of combustion being drawn to the side to which the stack is connected, the inner wall of the casing or shell 5 is contracted at or near the upper end of the lower drum, forming an annular throat 14, having an area or delivering capacity approximately equal to that of the stack or chimney.

This construction affords ample opportunity for any foreign material to be precipitated and settle down into the lower drum. Access is had to the upper and lower drums through manholes 10 and 11, formed,

respectively, in the top surface of the upper drum andthe sidewall of the lower drum.

Doors12 are also formed in the sides of the casing 6 to permit access to the manholes 11 .and also to permit of the cleaning of the chamber around the lower drum.

It will be observed that the boiler-audits inclosing shell are supported independently tion of the casing. This construction permits of the movement of the boiler proper during contraction and expansion independent of the inclosing shell and also independent of the internal tubular combustion-chamber.

I claim herein as my inventiou 1. The combination of a boiler consisting of an upper drum, an annular lower drum and tubes connectingsaid drums, a fire-chainber, a combustion-chamber extending from the fire-chamber through the lower drum and up between the tubes toward the upper drum and an inclosing casing or shell having its upper end closed and its lower end connected to the stack, substantially as set forth.

2. The combination of a boiler consisting of upper and lower drums and vertical tubes connecting said drums, a metal shell inclosing the drums and tubes, and a protectingroof arranged above the boiler and supported by the metal shell, substantially as set forth.

3. In a boiler the combination of a boiler consisting of an upper drum and an an nular lower drum and tubes connecting said drums,

a fire-chamber, an annular combustion-chamber extending from the fire-chamber through the lower drum and up between the tubes toward the upper drum and an inclosing casing having its lower end connected to the stack and provided with a contracted throat above the point of connection with the stack, substantially as set forth.

4. The combination of a boiler consisting of an upper drum, an annular lower drum and tubes connecting said drums, a fire-chamber located below the lower drum, an annular combustion-chamber extending from the fire-chamber up through the lower drum and between the tubes to a plane adjacent to the upper drum and an inclosing case or shell having its lower end connected to the stack, substantially as set forth.

In testimony whereof I have hereunto set my hand.

ENOS L. MOORE. Witnesses:

CLIFFORD B. ANDERSON, .TNo. M. MooRE. 

